#include<bits/stdc++.h>
using namespace std;
int n,a[200005],ans=0;
int main(){
	freopen("duel.in","r",stdin);
	freopen("duel.out","w",stdout);
	std::ios::sync_with_stdio(false);
	cin.tie(0),cout.tie(0);
	cin>>n;ans=n;
	for(int i=1;i<=n;i++){cin>>a[i];}
	sort(a+1,a+n+1);
	for(int i=1,j=1;i<=n,j<=n;){
		if(a[i]<a[j]){i++;j++;ans--;}
		else if(a[i]==a[j]){j++;}
	}
	cout<<ans;
	return 0;
}
